Question

What is the difference between the terms 'hydrolysis' and 'hydration'?

Answer 1

Hydrolysis is defined as a chemical reaction in which hydrogen and hydroxide ions ($H^{+}$ and $O{H}^{-}$ ions) of water molecule react with a compound to form products. For example:
$NaH+H_{2}O\to NaOH+H_2$
Hydration is defined as the addition of one or more water molecules to ions or molecules to form hydrated compounds. For example:
$CuS{O}_4+5H_{2}O\to CuS{O}_4.5H_{2}O$